Senior Software Engineer, Content Agent

• Build Sanity's Content Agent — the operations layer that turns structured content work (bulk edits, audits, translation, publishing) into tasks an agent can reliably run. • Do full-stack product work in TypeScript and React: MCP tools, agent orchestration, system prompts, evals, and backend services. • Own your domain and shape what Content Agent becomes, working closely with product and design. • Ship AI systems that hold up for real users at scale — not just in a demo. • Based in London, UK with 2–3 in-office days per week.

• Strong TypeScript and React skills, comfortable across the full stack — frontend, APIs, and backend. • Proven track record of shipping LLM-based systems in production, where reliability across all users is what counts. • Systems thinker — able to reason through user intent, edge cases, failure modes, and architecture implications for any new agent capability. • Strong writing skills with an understanding of how language works in agent instructions — precision, implication, and how a sentence will actually be parsed. • Comfortable with probabilistic systems: designing evals, running experiments, reading results statistically, and focusing on aggregate trends rather than individual failures. • Real experience with, or genuine curiosity about, MCP, tool-use patterns, and agent architectures.

• Familiarity with Sanity's GROQ query language or structured content systems. • Experience with headless CMS architectures, schemas, or composable content ecosystems. • Background in non-traditional disciplines (writing, interaction design, liberal arts) combined with strong engineering skills — the team values this highly.

• Build React interfaces in Dashboard, APIs, and backend services as part of full-stack product work. • Develop MCP tools and integrations that extend what the Content Agent can do. • Design and implement agent loops — the orchestration logic that determines what the agent does, in what order, and when to involve a human. • Write and iterate on system prompts, treating them as first-class engineering artefacts. • Run evals and experiments to measure and improve reliability in real usage. • Use GROQ to give the agent a deep understanding of structured content — schemas, references, field types, and validation rules. • Collaborate with product and design to shape the direction of Content Agent.

• Competitive location-based salary and stock options programme. • Comprehensive health plans and perks. • Flexible, trust-based work environment that encourages long-term personal and professional growth. • Healthy work-life balance that accommodates individual and family needs. • A global, multi-culturally diverse team of colleagues and customers.

Sanity.io is building the future of AI-powered Content Operations. Its AI Content Operating System gives teams the freedom to model, create, and automate content the way their business works — accelerating digital development and supercharging content operations efficiency. Companies like Figma, Anthropic, Riot Games, Nordstrom, and SKIMS use Sanity to power their content operations. Backed by $85m in Series C funding led by GP Bullhound, Sanity is a 200+ person company in a strong position for accelerated growth.